2 * Copyright (c) 1983, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1983, 1989, 1991, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)route.c 8.6 (Berkeley) 4/28/95
35 * $FreeBSD: src/sbin/route/route.c,v 1.40.2.11 2003/02/27 23:10:10 ru Exp $
38 #include <sys/param.h>
40 #include <sys/socket.h>
41 #include <sys/ioctl.h>
42 #include <sys/sysctl.h>
43 #include <sys/types.h>
46 #include <net/route.h>
47 #include <net/if_dl.h>
48 #include <netinet/in.h>
49 #include <netinet/if_ether.h>
50 #include <arpa/inet.h>
53 #include <netproto/mpls/mpls.h>
71 struct sockaddr_in sin;
73 struct sockaddr_in6 sin6;
75 struct sockaddr_mpls smpls;
76 struct sockaddr_dl sdl;
77 struct sockaddr_inarp sinarp;
78 struct sockaddr_storage ss; /* added to avoid memory overrun */
79 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, so_mpls1,
82 typedef union sockunion *sup;
87 static struct ortentry route;
88 static struct rt_metrics rt_metrics;
89 static int pid, rtm_addrs;
91 static int forcehost, forcenet, af, qflag, tflag;
92 static int iflag, verbose, aflen = sizeof(struct sockaddr_in);
93 static int locking, lockrest, debugonly;
94 static int mplsop, popcount, pushcount, swapcount;
95 static u_long rtm_inits;
98 static void flushroutes(int, char **);
99 static void set_metric(char *, int);
100 static void newroute(int, char **);
101 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
102 static void interfaces(void);
103 static void monitor(void);
104 static void sockaddr(const char *, struct sockaddr *);
105 static void sodump(sup, const char *);
106 static void bprintf(FILE *, int, u_char *);
107 static void print_getmsg(struct rt_msghdr *, int);
108 static void print_rtmsg(struct rt_msghdr *, int);
109 static void pmsg_common(struct rt_msghdr *);
110 static void pmsg_addrs(char *, int);
111 static void mask_addr(void);
112 static int getaddr(int, const char *, struct hostent **);
113 static int rtmsg(int, int);
114 static int prefixlen(const char *);
116 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
120 usage(const char *cp)
123 warnx("bad keyword: %s", cp);
124 fprintf(stderr, "usage: route [-dnqtv] command [[modifiers] args]\n");
130 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
131 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
134 main(int argc, char **argv)
141 while ((ch = getopt(argc, argv, "c:wnqdtv")) != -1)
144 cpuflag = strtol(optarg, NULL, 0);
174 s = open(_PATH_DEVNULL, O_WRONLY, 0);
176 s = socket(PF_ROUTE, SOCK_RAW, 0);
178 err(EX_OSERR, "socket");
180 switch (keyword(*argv)) {
188 newroute(argc, argv);
200 flushroutes(argc, argv);
209 * Purge all entries in the routing tables not
210 * associated with network interfaces.
213 flushroutes(int argc, char **argv)
216 int mib[7], rlen, seqno;
218 char *buf, *next, *lim;
219 struct rt_msghdr *rtm;
222 errx(EX_NOPERM, "must be root to alter routing table");
224 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
227 if (argc == 2 && **argv == '-')
228 switch (keyword(*argv + 1)) {
250 mib[2] = 0; /* protocol */
251 mib[3] = 0; /* wildcard address family */
252 mib[4] = NET_RT_DUMP;
253 mib[5] = 0; /* no flags */
260 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0)
261 err(EX_OSERR, "route-sysctl-estimate");
262 if ((buf = malloc(needed)) == NULL)
263 errx(EX_OSERR, "malloc failed");
264 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0)
265 err(EX_OSERR, "route-sysctl-get");
268 printf("Examining routing table from sysctl\n");
270 for (next = buf; next < lim; next += rtm->rtm_msglen) {
271 rtm = (struct rt_msghdr *)next;
273 print_rtmsg(rtm, rtm->rtm_msglen);
274 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
277 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
279 if (sa->sa_family != af)
284 rtm->rtm_type = RTM_DELETE;
285 rtm->rtm_seq = seqno;
286 rlen = write(s, next, rtm->rtm_msglen);
287 if (rlen < (int)rtm->rtm_msglen) {
288 warn("write to routing socket");
289 printf("got only %d for rlen\n", rlen);
296 print_rtmsg(rtm, rlen);
298 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
300 printf("%-20s ", rtm->rtm_flags & RTF_HOST ?
301 routename(sa) : netname(sa));
303 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
304 routename(sa) : netname(sa));
306 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) +
309 printf("%-20s ", routename(sa));
311 printf("%-20.20s ", routename(sa));
319 routename(struct sockaddr *sa)
322 static char line[MAXHOSTNAMELEN + 1];
324 static char domain[MAXHOSTNAMELEN + 1];
325 static int first = 1;
329 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
330 (cp = strchr(domain, '.'))) {
331 domain[MAXHOSTNAMELEN] = '\0';
332 strcpy(domain, cp + 1);
338 strcpy(line, "default");
339 else switch (sa->sa_family) {
343 in = ((struct sockaddr_in *)sa)->sin_addr;
346 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
348 if (cp == NULL && !nflag) {
349 hp = gethostbyaddr(&in, sizeof(struct in_addr),
353 cptr = strchr(hp->h_name, '.');
354 if (cptr != NULL && !wflag &&
355 strcmp(cptr + 1, domain) == 0)
361 strncpy(line, cp, sizeof(line) - 1);
362 line[sizeof(line) - 1] = '\0';
364 sprintf(line, "%s", inet_ntoa(in));
371 struct sockaddr_in6 sin6; /* use static var for safety */
373 #ifdef NI_WITHSCOPEID
374 niflags = NI_WITHSCOPEID;
377 memset(&sin6, 0, sizeof(sin6));
378 memcpy(&sin6, sa, sa->sa_len);
379 sin6.sin6_len = sizeof(struct sockaddr_in6);
380 sin6.sin6_family = AF_INET6;
382 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
383 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
384 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
385 sin6.sin6_scope_id == 0) {
387 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
388 sin6.sin6_addr.s6_addr[2] = 0;
389 sin6.sin6_addr.s6_addr[3] = 0;
393 niflags |= NI_NUMERICHOST;
394 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
395 line, sizeof(line), NULL, 0, niflags) != 0)
396 strncpy(line, "invalid", sizeof(line));
403 return(link_ntoa((struct sockaddr_dl *)sa));
408 * Unknown address family; just render the raw
409 * data in sa->sa_data as hex values.
411 uint8_t *sp = (uint8_t *)sa->sa_data;
412 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
413 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
414 char *cpe = line + sizeof(line);
416 while (sp < splim && cps < cpe)
417 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
425 * Return the name of the network whose address is given.
426 * The address is assumed to be that of a net or subnet, not a host.
429 netname(struct sockaddr *sa)
432 static char line[MAXHOSTNAMELEN + 1];
433 struct netent *np = 0;
438 switch (sa->sa_family) {
442 in = ((struct sockaddr_in *)sa)->sin_addr;
444 i = in.s_addr = ntohl(in.s_addr);
449 mask = IN_CLASSA_NET;
451 } else if (IN_CLASSB(i)) {
452 mask = IN_CLASSB_NET;
455 mask = IN_CLASSC_NET;
459 * If there are more bits than the standard mask
460 * would suggest, subnets must be in use.
461 * Guess at the subnet mask, assuming reasonable
462 * width subnet fields.
464 while (in.s_addr &~ mask)
465 mask = (long)mask >> subnetshift;
466 net = in.s_addr & mask;
467 while ((mask & 1) == 0)
468 mask >>= 1, net >>= 1;
469 np = getnetbyaddr(net, AF_INET);
473 #define C(x) (unsigned)((x) & 0xff)
475 strncpy(line, cp, sizeof(line));
476 else if ((in.s_addr & 0xffffff) == 0)
477 sprintf(line, "%u", C(in.s_addr >> 24));
478 else if ((in.s_addr & 0xffff) == 0)
479 sprintf(line, "%u.%u", C(in.s_addr >> 24),
481 else if ((in.s_addr & 0xff) == 0)
482 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
483 C(in.s_addr >> 16), C(in.s_addr >> 8));
485 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
486 C(in.s_addr >> 16), C(in.s_addr >> 8),
495 struct sockaddr_in6 sin6; /* use static var for safety */
497 #ifdef NI_WITHSCOPEID
498 niflags = NI_WITHSCOPEID;
501 memset(&sin6, 0, sizeof(sin6));
502 memcpy(&sin6, sa, sa->sa_len);
503 sin6.sin6_len = sizeof(struct sockaddr_in6);
504 sin6.sin6_family = AF_INET6;
506 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
507 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
508 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
509 sin6.sin6_scope_id == 0) {
511 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
512 sin6.sin6_addr.s6_addr[2] = 0;
513 sin6.sin6_addr.s6_addr[3] = 0;
517 niflags |= NI_NUMERICHOST;
518 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
519 line, sizeof(line), NULL, 0, niflags) != 0)
520 strncpy(line, "invalid", sizeof(line));
527 return(link_ntoa((struct sockaddr_dl *)sa));
533 * Unknown address family; just render the raw
534 * data in sa->sa_data as hex values.
536 uint8_t *sp = (uint8_t *)sa->sa_data;
537 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
538 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
539 char *cpe = line + sizeof(line);
541 while (sp < splim && cps < cpe)
542 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
550 set_metric(char *value, int key)
553 u_long noval, *valp = &noval;
556 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
557 caseof(K_MTU, RTV_MTU, rmx_mtu);
558 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
559 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
560 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
561 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
562 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
563 caseof(K_RTT, RTV_RTT, rmx_rtt);
564 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
565 caseof(K_MSL, RTV_MSL, rmx_msl);
568 if (lockrest || locking)
569 rt_metrics.rmx_locks |= flag;
576 newroute(int argc, char **argv)
579 const char *err_str, *dest = "", *gateway = "";
580 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC;
582 struct hostent *hp = 0;
585 errx(EX_NOPERM, "must be root to alter routing table");
589 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
591 if (**(++argv)== '-') {
592 switch (key = keyword(1 + *argv)) {
595 aflen = sizeof(struct sockaddr_dl);
599 aflen = sizeof(struct sockaddr_in);
604 aflen = sizeof(struct sockaddr_in6);
609 aflen = sizeof(union sockunion);
616 flags &= ~RTF_STATIC;
634 flags |= RTF_BLACKHOLE;
646 flags |= RTF_CLONING;
649 flags |= RTF_XRESOLVE;
657 getaddr(RTA_IFA, *++argv, 0);
662 getaddr(RTA_IFP, *++argv, 0);
667 getaddr(RTA_GENMASK, *++argv, 0);
672 getaddr(RTA_GATEWAY, *++argv, 0);
677 ishost = getaddr(RTA_DST, *++argv, &hp);
683 getaddr(RTA_NETMASK, *++argv, 0);
691 if (prefixlen(*++argv) == -1) {
701 aflen = sizeof(struct sockaddr_mpls);
704 flags |= RTF_MPLSOPS;
706 mplsop = MPLSLOP_POP;
709 getaddr(RTA_MPLS1, "", 0);
712 getaddr(RTA_MPLS2, "", 0);
715 getaddr(RTA_MPLS3, "", 0);
722 warnx("Push or swap after pop. Ignoring.");
726 mplsop = MPLSLOP_PUSH;
730 warnx("Swap after push. Ignoring.");
734 warnx("Too many swaps. Ignoring.");
737 mplsop = MPLSLOP_SWAP;
740 flags |= RTF_MPLSOPS;
742 aflen = sizeof(struct sockaddr_mpls);
745 switch(pushcount + swapcount){
747 getaddr(RTA_MPLS1, *++argv, 0);
750 getaddr(RTA_MPLS2, *++argv, 0);
753 getaddr(RTA_MPLS3, *++argv, 0);
768 set_metric(*++argv, key);
774 if ((rtm_addrs & RTA_DST) == 0) {
776 ishost = getaddr(RTA_DST, *argv, &hp);
777 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
779 getaddr(RTA_GATEWAY, *argv, &hp);
781 getaddr(RTA_NETMASK, *argv, 0);
789 if (af == AF_INET6) {
790 rtm_addrs &= ~RTA_NETMASK;
791 memset((void *)&so_mask, 0, sizeof(so_mask));
801 flags |= RTF_GATEWAY;
803 so_dst.sinarp.sin_other = SIN_PROXY;
804 flags |= RTF_ANNOUNCE;
806 for (attempts = 1; ; attempts++) {
808 if ((ret = rtmsg(*cmd, flags)) == 0)
810 if (errno != ENETUNREACH && errno != ESRCH)
812 if (af == AF_INET && *gateway != '\0' &&
813 hp != NULL && hp->h_addr_list[1] != NULL) {
815 memmove(&so_gate.sin.sin_addr,
817 MIN((size_t)hp->h_length,
818 sizeof(so_gate.sin.sin_addr)));
826 printf("%s %s %s", cmd, ishost? "host" : "net", dest);
827 if (*gateway != '\0') {
828 printf(": gateway %s", gateway);
829 if (attempts > 1 && ret == 0 && af == AF_INET)
831 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
838 err_str = "not in table";
841 err_str = "entry in use";
844 err_str = "routing table overflow";
846 case EDQUOT: /* handle recursion avoidance in
848 err_str = "gateway uses the same route";
851 err_str = strerror(oerrno);
854 printf(": %s\n", err_str);
861 inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits)
863 u_long addr, mask = 0;
866 rtm_addrs |= RTA_NETMASK;
868 * XXX: This approach unable to handle 0.0.0.1/32 correctly
869 * as inet_network() converts 0.0.0.1 and 1 equally.
872 addr = net << IN_CLASSA_NSHIFT;
873 else if (net <= 0xffff)
874 addr = net << IN_CLASSB_NSHIFT;
875 else if (net <= 0xffffff)
876 addr = net << IN_CLASSC_NSHIFT;
881 mask = 0xffffffff << (32 - bits);
884 else if (IN_CLASSA(addr))
885 mask = IN_CLASSA_NET;
886 else if (IN_CLASSB(addr))
887 mask = IN_CLASSB_NET;
888 else if (IN_CLASSC(addr))
889 mask = IN_CLASSC_NET;
890 else if (IN_MULTICAST(addr))
891 mask = IN_CLASSD_NET;
895 in->sin_addr.s_addr = htonl(addr);
897 in->sin_addr.s_addr = htonl(mask);
900 cp = (char *)(&in->sin_addr + 1);
901 while (*--cp == 0 && cp > (char *)in)
903 in->sin_len = 1 + cp - (char *)in;
908 * XXX the function may need more improvement...
911 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
916 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
917 sin6->sin6_scope_id == 0) {
919 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
920 /* aggregatable global unicast - RFC2374 */
921 memset(&in6, 0, sizeof(in6));
922 if (memcmp(&sin6->sin6_addr.s6_addr[8],
923 &in6.s6_addr[8], 8) == 0)
928 if (plen == NULL || strcmp(plen, "128") == 0)
930 rtm_addrs |= RTA_NETMASK;
937 * Interpret an argument as a network address of some kind,
938 * returning 1 if a host address, 0 if a network address.
941 getaddr(int which, const char *str, struct hostent **hpp)
948 int afamily; /* local copy of af so we can change it */
952 aflen = sizeof(struct sockaddr_in);
963 struct ifaddrs *ifap, *ifa;
964 struct sockaddr_dl *sdl = NULL;
966 if (getifaddrs(&ifap))
967 err(1, "getifaddrs");
969 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
970 if (ifa->ifa_addr->sa_family != AF_LINK)
973 if (strcmp(str, ifa->ifa_name) != 0)
976 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
978 /* If we found it, then use it */
981 * Copy is safe since we have a
982 * sockaddr_storage member in sockunion{}.
983 * Note that we need to copy before calling
986 * Interface routes are routed only by their
987 * sdl_index or interface name (we provide
988 * both here), not by the ARP address of the
989 * local interface (alen, slen = 0).
991 memcpy(&su->sdl, sdl, sdl->sdl_len);
992 su->sdl.sdl_alen = 0;
993 su->sdl.sdl_slen = 0;
1023 usage("internal error");
1026 su->sa.sa_len = aflen;
1027 su->sa.sa_family = afamily; /* cases that don't want it have left
1029 if (strcmp(str, "default") == 0) {
1031 * Default is net 0.0.0.0/0
1036 /* bzero(su, sizeof(*su)); *//* for readability */
1037 getaddr(RTA_NETMASK, str, 0);
1041 /* bzero(su, sizeof(*su)); *//* for readability */
1050 struct addrinfo hints, *res;
1053 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1055 memset(&hints, 0, sizeof(hints));
1056 hints.ai_family = afamily; /*AF_INET6*/
1057 hints.ai_flags = AI_NUMERICHOST;
1058 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1059 if (getaddrinfo(str, "0", &hints, &res) != 0 ||
1060 res->ai_family != AF_INET6 ||
1061 res->ai_addrlen != sizeof(su->sin6)) {
1062 fprintf(stderr, "%s: bad value\n", str);
1065 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1067 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1068 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) &&
1069 su->sin6.sin6_scope_id) {
1070 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1071 htons(su->sin6.sin6_scope_id);
1072 su->sin6.sin6_scope_id = 0;
1078 if (which == RTA_DST)
1079 return(inet6_makenetandmask(&su->sin6, q));
1085 link_addr(str, &su->sdl);
1089 su->sa.sa_len = sizeof(*su);
1090 sockaddr(str, &su->sa);
1097 bzero(su, sizeof(*su));
1098 su->sa.sa_len = sizeof(*su);
1099 su->sa.sa_family = AF_MPLS;
1100 su->smpls.smpls_op = mplsop;
1101 if (mplsop != MPLSLOP_POP && mplsop != MPLSLOP_POPALL &&
1103 if (sscanf(str, "%u", &label) != 1)
1104 errx(EX_NOHOST, "bad address: %s", str);
1105 su->smpls.smpls_label = htonl(label);
1119 q = strchr(str,'/');
1120 if (q != NULL && which == RTA_DST) {
1122 if ((val = inet_network(str)) != INADDR_NONE) {
1123 inet_makenetandmask(
1124 val, &su->sin, strtoul(q+1, 0, 0));
1129 if ((which != RTA_DST || forcenet == 0) &&
1130 inet_aton(str, &su->sin.sin_addr)) {
1131 val = su->sin.sin_addr.s_addr;
1132 if (which != RTA_DST ||
1133 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1140 if (which == RTA_DST && forcehost == 0 &&
1141 ((val = inet_network(str)) != INADDR_NONE ||
1142 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1144 inet_makenetandmask(val, &su->sin, 0);
1147 hp = gethostbyname(str);
1150 su->sin.sin_family = hp->h_addrtype;
1151 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1152 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1155 errx(EX_NOHOST, "bad address: %s", str);
1159 prefixlen(const char *len_str)
1161 int len = atoi(len_str), q, r;
1165 rtm_addrs |= RTA_NETMASK;
1170 p = (char *)&so_mask.sin6.sin6_addr;
1175 p = (char *)&so_mask.sin.sin_addr;
1178 fprintf(stderr, "prefixlen not supported in this af\n");
1183 if (len < 0 || max < len) {
1184 fprintf(stderr, "%s: bad value\n", len_str);
1190 so_mask.sa.sa_family = af;
1191 so_mask.sa.sa_len = aflen;
1192 memset((void *)p, 0, max / 8);
1194 memset((void *)p, 0xff, q);
1196 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1208 char *buf, *lim, *next;
1209 struct rt_msghdr *rtm;
1213 mib[2] = 0; /* protocol */
1214 mib[3] = 0; /* wildcard address family */
1215 mib[4] = NET_RT_IFLIST;
1216 mib[5] = 0; /* no flags */
1217 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1218 err(EX_OSERR, "route-sysctl-estimate");
1219 if ((buf = malloc(needed)) == NULL)
1220 errx(EX_OSERR, "malloc failed");
1221 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
1222 err(EX_OSERR, "actual retrieval of interface table");
1224 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1225 rtm = (struct rt_msghdr *)next;
1226 print_rtmsg(rtm, rtm->rtm_msglen);
1243 n = read(s, msg, 2048);
1245 printf("\ngot message of size %d on %s", n, ctime(&now));
1246 print_rtmsg((struct rt_msghdr *)msg, n);
1251 struct rt_msghdr m_rtm;
1256 rtmsg(int cmd, int flags)
1260 char *cp = m_rtmsg.m_space;
1263 #define NEXTADDR(w, u) \
1264 if (rtm_addrs & (w)) {\
1265 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\
1266 if (verbose) sodump(&(u),"u");\
1270 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1273 else if (cmd == 'c')
1275 else if (cmd == 'g') {
1277 if (so_ifp.sa.sa_family == 0) {
1278 so_ifp.sa.sa_family = AF_LINK;
1279 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1280 rtm_addrs |= RTA_IFP;
1284 #define rtm m_rtmsg.m_rtm
1286 rtm.rtm_flags = flags;
1287 rtm.rtm_version = RTM_VERSION;
1288 rtm.rtm_seq = ++seq;
1289 rtm.rtm_addrs = rtm_addrs;
1290 rtm.rtm_rmx = rt_metrics;
1291 rtm.rtm_inits = rtm_inits;
1293 if (rtm_addrs & RTA_NETMASK)
1295 NEXTADDR(RTA_DST, so_dst);
1296 NEXTADDR(RTA_GATEWAY, so_gate);
1297 NEXTADDR(RTA_NETMASK, so_mask);
1298 NEXTADDR(RTA_GENMASK, so_genmask);
1299 NEXTADDR(RTA_IFP, so_ifp);
1300 NEXTADDR(RTA_IFA, so_ifa);
1301 NEXTADDR(RTA_MPLS1, so_mpls1);
1302 NEXTADDR(RTA_MPLS2, so_mpls2);
1303 NEXTADDR(RTA_MPLS3, so_mpls3);
1304 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1306 print_rtmsg(&rtm, l);
1309 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1310 warn("writing to routing socket");
1313 if (cmd == RTM_GET) {
1315 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1316 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1318 warn("read from routing socket");
1320 print_getmsg(&rtm, l);
1329 int olen = so_mask.sa.sa_len;
1330 char *cp1 = olen + (char *)&so_mask, *cp2;
1332 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1334 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1337 if ((rtm_addrs & RTA_DST) == 0)
1339 switch (so_dst.sa.sa_family) {
1347 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1348 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1351 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1352 while (cp1 > so_dst.sa.sa_data)
1356 const char *msgtypes[] = {
1358 "RTM_ADD: Add Route",
1359 "RTM_DELETE: Delete Route",
1360 "RTM_CHANGE: Change Metrics or flags",
1361 "RTM_GET: Report Metrics",
1362 "RTM_LOSING: Kernel Suspects Partitioning",
1363 "RTM_REDIRECT: Told to use different route",
1364 "RTM_MISS: Lookup failed on this address",
1365 "RTM_LOCK: fix specified metrics",
1366 "RTM_OLDADD: caused by SIOCADDRT",
1367 "RTM_OLDDEL: caused by SIOCDELRT",
1368 "RTM_RESOLVE: Route created by cloning",
1369 "RTM_NEWADDR: address being added to iface",
1370 "RTM_DELADDR: address being removed from iface",
1371 "RTM_IFINFO: iface status change",
1372 "RTM_NEWMADDR: new multicast group membership on iface",
1373 "RTM_DELMADDR: multicast group membership removed from iface",
1374 "RTM_IFANNOUNCE: interface arrival/departure",
1378 char metricnames[] =
1379 "\011msl\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
1382 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1383 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1384 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1385 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1387 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1388 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1389 "\017LINK2\020MULTICAST";
1391 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"
1392 "\011MPLS1\012MPLS2\013MPLS3";
1395 print_rtmsg(struct rt_msghdr *rtm, int msglen __unused)
1397 struct if_msghdr *ifm;
1398 struct ifa_msghdr *ifam;
1400 struct ifma_msghdr *ifmam;
1402 struct if_announcemsghdr *ifan;
1406 if (rtm->rtm_version != RTM_VERSION) {
1407 printf("routing message version %d not understood\n",
1411 if (msgtypes[rtm->rtm_type] != NULL)
1412 printf("%s: ", msgtypes[rtm->rtm_type]);
1414 printf("#%d: ", rtm->rtm_type);
1415 printf("len %d, ", rtm->rtm_msglen);
1416 switch (rtm->rtm_type) {
1418 ifm = (struct if_msghdr *)rtm;
1419 printf("if# %d, flags:", ifm->ifm_index);
1420 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1421 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1425 ifam = (struct ifa_msghdr *)rtm;
1426 printf("metric %d, flags:", ifam->ifam_metric);
1427 bprintf(stdout, ifam->ifam_flags, routeflags);
1428 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1433 ifmam = (struct ifma_msghdr *)rtm;
1434 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1437 case RTM_IFANNOUNCE:
1438 ifan = (struct if_announcemsghdr *)rtm;
1439 printf("if# %d, what: ", ifan->ifan_index);
1440 switch (ifan->ifan_what) {
1444 case IFAN_DEPARTURE:
1445 printf("departure");
1448 printf("#%d", ifan->ifan_what);
1455 printf("pid: %ld, seq %d, errno %d, flags:",
1456 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1457 bprintf(stdout, rtm->rtm_flags, routeflags);
1463 print_getmsg(struct rt_msghdr *rtm, int msglen)
1465 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1466 struct sockaddr_dl *ifp = NULL;
1467 struct sockaddr *sa;
1471 printf(" route to: %s\n", routename(&so_dst.sa));
1472 if (rtm->rtm_version != RTM_VERSION) {
1473 warnx("routing message version %d not understood",
1477 if (rtm->rtm_msglen > msglen) {
1478 warnx("message length mismatch, in packet %d, returned %d",
1479 rtm->rtm_msglen, msglen);
1481 if (rtm->rtm_errno != 0) {
1482 errno = rtm->rtm_errno;
1483 warn("message indicates error %d", errno);
1486 cp = ((char *)(rtm + 1));
1488 for (i = 1; i != 0; i <<= 1)
1489 if (i & rtm->rtm_addrs) {
1490 sa = (struct sockaddr *)cp;
1502 if (sa->sa_family == AF_LINK &&
1503 ((struct sockaddr_dl *)sa)->sdl_nlen)
1504 ifp = (struct sockaddr_dl *)sa;
1509 if (dst != NULL && mask != NULL)
1510 mask->sa_family = dst->sa_family; /* XXX */
1512 printf("destination: %s\n", routename(dst));
1514 int savenflag = nflag;
1517 printf(" mask: %s\n", routename(mask));
1520 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY)
1521 printf(" gateway: %s\n", routename(gate));
1523 printf(" interface: %.*s\n",
1524 ifp->sdl_nlen, ifp->sdl_data);
1526 bprintf(stdout, rtm->rtm_flags, routeflags);
1528 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1529 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1532 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire msl,msec");
1533 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1534 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1535 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1536 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1537 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1538 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1539 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1540 if (rtm->rtm_rmx.rmx_expire != 0)
1541 rtm->rtm_rmx.rmx_expire -= time(0);
1542 printf("%8ld%c ", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1543 printf("%8ld\n", rtm->rtm_rmx.rmx_msl);
1546 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1549 else if (rtm->rtm_addrs &~ RTA_IGN) {
1550 printf("sockaddrs: ");
1551 bprintf(stdout, rtm->rtm_addrs, addrnames);
1558 pmsg_common(struct rt_msghdr *rtm)
1560 printf("\nlocks: ");
1561 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1563 bprintf(stdout, rtm->rtm_inits, metricnames);
1564 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1568 pmsg_addrs(char *cp, int addrs)
1570 struct sockaddr *sa;
1577 printf("\nsockaddrs: ");
1578 bprintf(stdout, addrs, addrnames);
1580 for (i = 1; i != 0; i <<= 1)
1582 sa = (struct sockaddr *)cp;
1583 printf(" %s", routename(sa));
1591 bprintf(FILE *fp, int b, u_char *str)
1598 while ((i = *str++) != 0) {
1599 if (b & (1 << (i-1))) {
1606 for (; (i = *str) > 32; str++)
1617 keyword(const char *cp)
1619 struct keytab *kt = keywords;
1621 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1627 sodump(sup su, const char *which)
1629 switch (su->sa.sa_family) {
1631 printf("%s: link %s; ",
1632 which, link_ntoa(&su->sdl));
1635 printf("%s: inet %s; ",
1636 which, inet_ntoa(su->sin.sin_addr));
1652 sockaddr(const char *addr, struct sockaddr *sa)
1654 char *cp = (char *)sa;
1655 int size = sa->sa_len;
1656 char *cplim = cp + size;
1657 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1659 memset(cp, 0, size);
1662 if ((*addr >= '0') && (*addr <= '9')) {
1664 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1665 new = *addr - 'a' + 10;
1666 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1667 new = *addr - 'A' + 10;
1668 } else if (*addr == '\0')
1673 switch (state /* | INPUT */) {
1674 case GOTTWO | DIGIT:
1675 *cp++ = byte; /*FALLTHROUGH*/
1676 case VIRGIN | DIGIT:
1677 state = GOTONE; byte = new; continue;
1678 case GOTONE | DIGIT:
1679 state = GOTTWO; byte = new + (byte << 4); continue;
1680 default: /* | DELIM */
1681 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1684 *cp++ = byte; /* FALLTHROUGH */
1689 } while (cp < cplim);
1690 sa->sa_len = cp - (char *)sa;